If I were a hero, I'd be a Martin Luther (Part 2223)...

 Superhero Anydays

Today, by Joe Staton, we have the two new members of Earth-2's JSA.  They joined when the book was published anew back in the 70s.

Power Girl, Superman's cousin (aka Earth-2's Supergirl), and the Huntress, daughter of Earth-2's Batman and Catwoman.

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And today we also have two gender bent osplayers: Mystique and Storm

Although technically, since Mystique can take any  from, perhaps this is just her taking this guy's form?  Who knows? 

POLT